Floating numbers generation in a range

I Want to generate an array of 100 Different random floating numbers in the range 2.2 to 22. Please help me with this.

Answer 1

[Roger Stafford]

What kind of probability distribution do you wish these numbers to have over this interval? If it is to be uniform use 'rand' with appropriate scaling and offset.

[BISWA]

Thanks for responding. I had tried rand but the output was showing integers only.

[Roger Stafford]

I think you were using 'randi', not 'rand'. The 'randi' function returns only integers, whereas 'rand' returns fractional values. The probability of getting an integer output from 'rand' is exceedingly small. I have personally never seen one.

[BISWA]

Please post the code here which will generate an array of 50 floating numbers between 2.2 to 22.

[Image Analyst]

You never looked up rand() in the help did you? Otherwise you would have noticed Example 1 which solves your problem

Example 1
 Generate values from the uniform distribution on the interval [a,b]:
 r = a + (b-a).*rand(100,1);

and I'm pretty sure you would have figured out a is 2.2 and b is 22 and you wouldn't have needed to wait for Simon to do it for you. Please mark the answer as Accepted.

Answer 2

[Simon]

   19.8*rand(50, 1) +2 .2

[BISWA]

Thank you very much. Its working just fine.